问题详情

袋中共有5个球,其中3个新球,2个旧球,每次取1个,无放回地取2次,则第二次取到新球的概率是( )。


A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545530037582995d2f7af9f5428681ebaff627022310image57.png">

B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545530037678eba3b15838a84f2f9bfc3e4ecf82ff13image58.png">

C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545530037776f35e64b665174e2cb3e614b59c7ee13eimage59.png">

D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1545530037871ba58afbcc2494841a3fd151001b7d1f6image60.png">

时间:2021-07-17 23:15 关键词: 工商管理 专升本 经济数学 练习题

答案解析

D